APA aipamena

Ballard, M., & Mathias, P. (1971). Revolutions and steam engines 1775 - 1815. Methuen.

Chicago Style aipamena

Ballard, Martin, and Peter Mathias. Revolutions and Steam Engines 1775 - 1815. London: Methuen, 1971.

MLA aipamena

Ballard, Martin, and Peter Mathias. Revolutions and Steam Engines 1775 - 1815. Methuen, 1971.

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